But now, the actor is hinting that Heisenberg may not be as dead as everyone seems to think. The tease came during an interview on CNN Thursday, when host Ashleigh Banfield floated her theory by him.

"I wasn't so sure that you died," Banfield said. "Your eyes were open, and I thought, 'What if the police just take him into custody, he gets better, breaks out and just goes nuts?"

"You never saw a bag zip up or anything," Cranston teased. (Say what?!)

"Is he dead?" Banfield asked flat out.

"I don't know!" the actor admitted.

And when asked if fans would ever see Walter White again, Cranston replied with a small shrug, "Never say never! Let's just say that."

Though the show ended in September, it's not the end of the "Breaking Bad" universe. A spin-off centered around sleazeball lawyer Saul Goodman (Bob Odenkirk) titled "Better Call Saul" is in the works. "Bad" star Aaron Paul, who played Jesse Pinkman, has already said he'd like to be involved, but more than that, "Both Bryan and I want to be a part of that," the actor told Details. So there is hope for more of Walter White!

But until then, Cranston is moving on. He currently stars as Lyndon B. Johnson in the Broadway play "All the Way," and has a part in the summer blockbuster "Godzilla." As for the big-budget film, it turns out the actor nearly passed on the project.

"Coming off 'Breaking Bad,' ... I thought, 'Oh, I have to do something that's of the same quality and writing that "Breaking Bad" is,' and I held it to a very high standard," Cranston said on CNN. "And then I realized, 'Well, that's unfair!' and I love Godzilla. That was my favorite monster growing up."